System Information
Linux Mint and nvidia gtx1070

Blender Version
Broken: (2.79a x64)
Worked: ( 2.78c x64 and below )

Short description of error
In the particule propreties panel, with hair active.
When you switch on "advanced" the size and random size sliders disapear on the render particule propreties panel but they doesn't reapear in the physics newtonian panel (like in Blender 2.78)

Exact steps for others to reproduce the error
(In particule panel propreties)
-with hair active
-switch on advanced
-choose an object or group in render panel in the box dupli object
-go to physics to change the size and random size, but they doesn't appear